Sure, waters a great hydrator, but sometimes you long for something more interesting. Here are four sips that give runners what they really needwithout adding gobs of calories. Fill in the blanks, and see which drink is ideal for you.

When I run I … feel sluggish and tired If this is you: Sip a cup of green tea 20 to 30 minutes before you run. The caffeine will pep you up and power you through to the last step, and its antioxidants may help with endurance, too.

When I run I … always get a side stitchIf this is you: Try coconut water; its chock-full of cramp-preventing potassium (15 times that of most sports drinks) and has less than 50 calories per cup. Try 8 ounces before or during your run to stay pain-free.

When I run I … get really sore the next dayIf this is you: With its perfect ratio of carbs to proteinplus the calciumchocolate milk is an excellent way to help your muscles recover postworkout. Drink a cup within 30 minutes of finishing a long run, when muscles are most receptive.

When I run I … sweat a lotIf this is you: A sports drink, with body-replenishing sugars and electrolytes, is the best way to stay hydrated. Choose one thats free of artificial colors, flavors, and preservatives (I like CLIF Quench), and sip 4 to 6 ounces every 15 to 20 minutes during your workout.